// JavaScript Document

function correctPNG()
{
	for(var i=0; i<document.images.length; i++)
	{
		var img = document.images[i];
		var imgName = img.src.toUpperCase();
		if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
		{
			var imgID = (img.id) ? "id='" + img.id + "' " : "";
			var imgClass = (img.className) ? "class='" + img.className + "' " : "";
			var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' ";
			var imgStyle = "display:inline-block;" + img.style.cssText;
			if (img.align == "left") imgStyle = "float:left;" + imgStyle;
			if (img.align == "right") imgStyle = "float:right;" + imgStyle;
			if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle;
			var strNewHTML = "<span " + imgID + imgClass + imgTitle
			+ " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
			+ "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
			+ "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>";
			img.outerHTML = strNewHTML;
			i = i-1;
		}
	}
}
function alphaBackgrounds(){
	var rslt = navigator.appVersion.match(/MSIE (d+.d+)/, '');
	var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);
	//var itsAllGood = ((rslt != null) && (Number(rslt[1]) >= 5.5) && (Number(rslt[1]) < 7) && (document.body.filters));
	for (i=0; i<document.all.length; i++){
		var bg = document.all[i].currentStyle.backgroundImage;
		if (bg){
			//兼容可信网站的附加内容判断
			if(document.all[i].id.indexOf("knet_kx_verify")<0)
			{
				if (bg.match(/.png/i) != null){
					var mypng = bg.substring(5,bg.length-2);
					//alert(mypng);
					document.all[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+mypng+"', sizingMethod='crop')";
					document.all[i].style.backgroundImage = "url('')";
					//alert(document.all[i].style.filter);
				}
			}
		}
	}
}
if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {
	window.attachEvent("onload", correctPNG);
	window.attachEvent("onload", alphaBackgrounds);
}
 